Their clash at Clayton High School in St. Louis followed the same script their campaign has taken since Akin won his primary, rife with barbs about health care reform, Medicare and the 2009 stimulus bill — all levied, on both sides, as accusations of hyper-partisanship.

“Claire McCaskill was the first to endorse Barack Obama, and she was a strong right hand passing legislation, voting with him 98 percent of the time,” Akin said during his.

But aside from those staid themes in this reddening purple state, McCaskill debuted a new attack — that Akin personally pays women less than men — and Akin endured a mini-stumble reminiscent of Rick Perry’s infamous “oops,” while appearing to have recovered publicly from the “legitimate rape” comment that shook his campaign.

McCaskill New Attack

McCaskill debuted a brand new attack line against Akin in the final moments of their debate on Thursday: that as a boss, Akin pays women less than men.

“He supports the boss being able to decide whether you get paid less just because you’re a woman,” McCaskill said during her closing remarks. “And if you look at Congressman Akin’s office, he’s a boss that does that: His women staff make 23.4 percent less than the men in his office.”

McCaskill’s campaign blasted out a press release as McCaskill said it, citing data from the congressional staff-salary database LegiStorm culled from 2001-2010.

Akin’s congressional office said it is not true that Akin pays women less categorically and pointed to the last quarter, in which women in Akin’s office made more than men by $3,158 on average over four months, according to LegiStorm data pulled by Akin’s office Thursday night.

“I think it’s interesting that an auditor would chop off the last several years,” said Akin’s communications director and district director, Steve Taylor, referencing McCaskill’s career as Missouri state auditor before her 2006 election to the Senate. Taylor called the accounting “somewhat disingenuous.”

“If it did occur, it was not a matter of policy, because we see that’s not the case now … There’s been no change in policy in the Akin office, there’s been no change in environment,” Taylor said. “If you look at what’s going on now, that really dispels the notion that there’s a policy of paying female workers less.”A Rick Perry Replay?

“We should stop giving money to Libya, to Pakistan, and to one other country,” Akin said, trailing off and unable to remember the third.

“Syria,” McCaskill interjected.

Well, it wasn’t quite a Rick Perry “oops” moment, but Akin’s forgetfulness did raise its specter as the two sparred over foreign policy and foreign aid.

RandPAC, a group supporting Sen. Rand Paul, released a TV ad this week attacking McCaskill for voting to send aid to Egypt, Libya and Pakistan. So neither of them were exactly right.

Akin Asked About ‘Rape’ Comment, Kind Of

On the hanging topic of his infamous “rape” comment, Akin has gone from abject apologies to comfortable retort.

The word “rape” was not mentioned in any question at the debate, but the candidates were asked what the national press will say about Missouri voters if Akin wins.

“I’ve had a chance to travel for 18 months, and I’ve got a pretty good sense of where people are,” Akin said. “My views are pretty much in sync with the voters of this state, and what’s more, I’ve opposed the failed record and the failed policies which have given us the unemployment, the lack of jobs, and other miscellaneous problems such as gasoline prices doubling.”

It’s unclear if Akin has rebounded in popularity since his rape comment since no pollsters deemed reliable by ABC News have polled potential voters in Missouri.